18 Families and (tknkra of 



2. Three posterior veins, all discal. P a c h y g a 8 t r i n t; 

 ^Foiir p')sterior veins, the anterior ones sometimes rudimentary. 3 



3. All the posterior veins discal, the last posterior cell contipruous at 



its base with the discal cell. ...... 4 



The last posterior vein arises from the second basal cell, the last 

 posterior cell not contiguous at its base with the discal cell, h 



4. Third antennal joint with a long, delicately fringed, lanielliform 



style; usually large, more or less elongated species; males 



dichoptic. (Hermetiinae.) . . . Hermetia 



Third joint not with such a style ; abdomen short, not more than 



twice as long as broad. . Clitellarinve 



5. AntenniB with a slender dorsal or terminal bristle. Sarg in.« 

 Antennie never with a slender or long bristle. S t r a t i o m v i n .*; 



Deriding. 



Abdomen with seven visible segments in the male, in the feinale 

 with an additional ovipositor. Wings with a stigmatic spot ; all the 

 posterior veins arise from the discal cell.* Abdomen flattened. 



1. Three posterior veins ; occiput flat. ..... 2 



Four posterior veins ; scutellum with spines 3 



2. Scutellum with spines ; palpi rudimentary. . Beris 

 Scutellum without spines (Metoponia Lw., non Macq.) 



Allognosta 



3. Occiput excavated; hind femora thickened at the extremity. 



^ Neoxaireta 

 Occiput flat, hind femora simple ; last two abdominal segments 



small. ........ SCOLIOPELTA 



SaRGINjE. 



Body usually elongate ; rather small, nearly bare species. Four 

 posterior veins, the last one arising from the basal cell. Antennae 

 short, the third joint rounded or subquadrate, with an apical or pre- 

 apical arista. Scutellum without spines on its border. [Occiput 

 deeply excavated.] 



1. Anterior ocellus more widely separated than the other two ; males 



holoptic or dichoptic 2 



Ocelli equidistant, more approximate 3 



* Variable in Kerie. . 



